India, July 8 -- The Enforcement Directorate (ED) has frozen bank deposits worth Rs 440 crore belonging to the All India Trinamool Congress (TMC) in Kolkata under the Prevention of Money Laundering Act (PMLA), intensifying its investigation into alleged financial transactions linked to the party's accounts.

The action, taken on Wednesday, comes as the central agency continues to examine the movement of funds allegedly routed through multiple aviation, travel and allied service firms.

According to the ED, investigators are examining allegations that more than Rs 150 crore was routed through a network of aviation, travel and related companies.

The agency is probing whether money used to hire chartered aircraft during the TMC's campaign f...